utils: add {un,}map_file to read an entire file

This wraps the current mmap call and adds a fallback implementation for
systems which do not have mmap (e.g. mingw).

Signed-off-by: Ran Benita <ran234@gmail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/utils.h b/src/utils.h
index b4daadd..160bc42 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -24,8 +24,10 @@
 #ifndef UTILS_H
 #define UTILS_H 1
 
+#include <errno.h>
 #include <inttypes.h>
 #include <stdbool.h>
+#include <stdio.h>
 #include <string.h>
 #include <strings.h>
 
@@ -91,6 +93,12 @@ memdup(const void *mem, size_t nmemb, size_t size)
     return p;
 }
 
+bool
+map_file(FILE *file, const char **string_out, size_t *size_out);
+
+void
+unmap_file(const char *str, size_t size);
+
 #define ARRAY_SIZE(arr) ((sizeof(arr) / sizeof(*(arr))))
 
 #define MIN(a, b) ((a) < (b) ? (a) : (b))